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30/09/2007
Mark Tully considers claims by scientists and climate change campaigners that we could be on the brink of a Sixth Extinction.
Last on
Sun 30 Sep 2007
23:30
Βι¶ΉΤΌΕΔ Radio 4
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- Sun 30 Sep 2007 06:05Βι¶ΉΤΌΕΔ Radio 4
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